I know people can't diagnose online but was just wondering what some causes could be, could stress cause the above symptoms? I take omeprazole for indigestion 20mg but some days still suffer from it, i have headaches almost daily and feel sick almost all the time. I haven't been eating very well which i thought could be the cause but the thought and smell of food often makes me feel worse, so have pretty much just been eating yogurts and chocolate.

It could be so many things, but I get those symptoms when I am under heavy stress.

Eating mainly yogurt (especially if it the kind in the little containers with fruit added) and chocolate is not really good, since they are both high in sugar, which could contribute to your headaches.

Try plain low fat yogurt and add your own fresh fruit.

If you are overweight, it could be your gallbladder.

Soup may help you as well.

yoghurts and chocolate would give you a sugar high, so could be why making your indigestion worse, i burn and bloat up like mad after sugars or fats. the headache could be due to the sugar again and the nausea will follow. Try drinking lots of water for the headache and rest, eat a banana or something that slowly releases energy but will fill you up and be healthy for you! good luck xx

If not eating you need to see the doctor or you will only become weaker and unwell,there are food drink supplement's you can buy,but if you see doctor you can get them for free if you ask about food drink supplement's.
And headaches so often you need to get sorted out so see doctor today.